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B's erstwhile Destiny's Child bandmate was so thrilled about Beyoncé's upcoming birth and helping out on diaper duty, she inadvertently revealed the child's sex for the first time.

"I'm so happy for my sister and her husband. They're so happy in this moment right now, as they should be. They've made a little bundle of love, I'm so excited for them," the excited songstress told the UK's BANG Showbiz on Thursday.

She continued: "I have no idea what I'm going to buy Beyonce at the baby shower because Jay is going to buy that little girl every single thing possible. She won't be spoiled but she will be very well looked-after."

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